A BSI compatible global shutter pixel with the feature of background light suppression has been d... more A BSI compatible global shutter pixel with the feature of background light suppression has been developed for differential imaging applications. The proposed pixel scheme features in-pixel consecutive multiple frame subtraction and accumulation. This yields a good immunity to background light, thus enhancing the contrast and detection probability for differential images while eliminating the need for off-chip data buffer or storage. In this paper, the signal behavior and noise performance have also been analyzed with an extracted pixel model. The calculated SNR shows an increasing tendency with the use of the proposed in-pixel computing scheme.
Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology, 2014
Documenting the distribution of radiotherapy departments and the availability of radiotherapy equ... more Documenting the distribution of radiotherapy departments and the availability of radiotherapy equipment in the European countries is an important part of HERO - the ESTRO Health Economics in Radiation Oncology project. HERO has the overall aim to develop a knowledge base of the provision of radiotherapy in Europe and build a model for health economic evaluation of radiation treatments at the European level. The aim of the current report is to describe the distribution of radiotherapy equipment in European countries. An 84-item questionnaire was sent out to European countries, principally through their national societies. The current report includes a detailed analysis of radiotherapy departments and equipment (questionnaire items 26-29), analyzed in relation to the annual number of treatment courses and the socio-economic status of the countries. The analysis is based on validated responses from 28 of the 40 European countries defined by the European Cancer Observatory (ECO). A larg...
A BSI compatible global shutter pixel with the feature of background light suppression has been d... more A BSI compatible global shutter pixel with the feature of background light suppression has been developed for differential imaging applications. The proposed pixel scheme features in-pixel consecutive multiple frame subtraction and accumulation. This yields a good immunity to background light, thus enhancing the contrast and detection probability for differential images while eliminating the need for off-chip data buffer or storage. In this paper, the signal behavior and noise performance have also been analyzed with an extracted pixel model. The calculated SNR shows an increasing tendency with the use of the proposed in-pixel computing scheme.
Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology, 2014
Documenting the distribution of radiotherapy departments and the availability of radiotherapy equ... more Documenting the distribution of radiotherapy departments and the availability of radiotherapy equipment in the European countries is an important part of HERO - the ESTRO Health Economics in Radiation Oncology project. HERO has the overall aim to develop a knowledge base of the provision of radiotherapy in Europe and build a model for health economic evaluation of radiation treatments at the European level. The aim of the current report is to describe the distribution of radiotherapy equipment in European countries. An 84-item questionnaire was sent out to European countries, principally through their national societies. The current report includes a detailed analysis of radiotherapy departments and equipment (questionnaire items 26-29), analyzed in relation to the annual number of treatment courses and the socio-economic status of the countries. The analysis is based on validated responses from 28 of the 40 European countries defined by the European Cancer Observatory (ECO). A larg...
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Papers by Karen Feyen